Does this filter work against people viewing from above? Some filters don't work above about 15 degrees...
13502
No it does not. Someone looking from above will be able to view what is on screen. It only works if viewing from the side.
13503
Standing up, in front of it, you can still see the screen but it is darker. This works very well for us as our desks/pcs are in the open and this has cut down on peek sneakers. One thing I noticed is when I am approaching the front desk in line with any pc, I can see the screen well enough to know if they are working or playing on the Internet.
869030
Takes a standard 77mm UV filter. Not sure if it creeps into the image. I can check.
465379
Some argue that filters create a bit of distortion, especially flare. While I've found this to be true with cheap filters, I find these B and W to be great protection with at least no "field relevant" distortions, meaning if you put then through a rigorous "lab" like test, you might prove they cause some flare, but I have never noticed a difference with the filters on or off. These are great filters..
382603
Mine works fine! I probably will buy another one soon. I Think you have to use this filter in order to work properly.
929584
I actually use a different filter that i place on top of the screen. I understand that there is no way to attack the filter that is why i just place over the filter. This type of filter (Filtrete) I cut and actually cover the window where the air blows. I am deployed and the the dust enters the AC. In order to privet dust from entering the room, I have to tape the filtrete over the the window that blows the cld air inside the room. I change the filtrate every two weeks and that's how fast the filtrate accumulates the dust and pollen. It does help though, I have weak lungs, and so far it does help clean and trap those dust particles in the air. The color white turns gray over a span of two weeks. It doesn't look very neat but i use it for the purpose of really filtering the air in my room.
1115402
I don't own that lens, but from some reading around it appears that regular filters are fine; however, I will make note that circular polarizers on a wide angle will produce very strange results due to uneven polarization. That may or may not be a concern depending if you want to use it for creative effect.
306848
Unless you cut out a portion of the screen and frame, this will not work with an HOB filter. I use an internal Whisper filter and the screen has just enough leeway to fit over the clip that the filter hangs from.
1086125
I haven't noticed any unusual "glare" problems with the design, other than the standard reflectivity of the clear, plastic plate cover that comes with the frame. I installed the matte side of the 3M Filter facing out, so nothing extra is added by it. It really works great on both my car and pickup, and have had no notice or comments by anyone unaware of the unit.
775219
That depends on the temp. of the smoke. If its cooler, say 50deg. and there are warmer objects in or beyond the smoke, eg. 80 deg. +, then yes it can. In my experience with it, the ability to positively identify a heat source (man, animal, other) tops out at 75 to 90 yds. This imager is relatively cheap compared to others. You get what you pay for.
136489
I would say yes, the screen/filter doesn't have tremendously large gaps between them. Any thing a dime size around or bigger should be caught.
500719
They're referring to 100 degree water. The water in the filter is very unlikely to actually reach 100 degrees F, especially if you run it even a little bit (since it's coming out of the ground tens of degrees colder).
800192
Yes, it does. It's under the category of magic. Different filters and settings.
1858256
this shouldn't interfere with any portion of focusing either in or out of focus regions. If you put this to its fullest setting you will be left with a very close to black out filter. What you will notice its that you will probably have areas off uneven filtering the darker you set the filter.
2163746
If your filter has threads on both sides like most of them do then you should be fine but you will get progressively worse vignetting the more you stack things. Unless you need the filter for some artistic effect you are better off without it. (Always.)
318552
The filter creates about 90 percent of the evaporation so it will still work a little, but your best bet is to get a filter and run it intermittently on a timer to preserve your filter life...
2025077
I've not had that problem with it. You need to be careful getting it properly mounted on the upper tracks, but once it appears to be installed properly, it works for several months until the next filter.
2194984
It's a bit smudgy. I use it now to protect old lenses that I don't use much. B+W, Hoya, Tiffen, are all good filters that I currently use and I haven't had any problems with. I advise paying the extra few bucks for the better filters that will last longer.